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对复合材料板的冲击性能进行研究。增加两种类型复合材料板(玻-碳及玻-环氧)的冲击能量直至完全成为一个试件。采用能量模拟方法建立冲击能和能量吸收的关系,结合荷载-挠度曲线确定组合构件的针入度和开孔阈值。通过比较荷载-挠度曲线以及冲击侧和非冲击侧破坏试件的图像,对不同冲击能下破坏试件的破坏过程进行评估。同时,对破坏试件的横截面也进行了检查和分析,对破坏程度,如纤维破坏、临界层的剥离范围,进行评估。研究表明:采用玻纤面层组合构件的开孔阈值比采用碳纤面层的组合构件大约高30%。
The impact properties of composite plates were studied. Increase the impact energy of both types of composite plates (glass-carbon and glass-epoxy) until they have completely become a test piece. The energy simulation method was used to establish the relationship between impact energy and energy absorption. Combined with the load-deflection curve, the penetration and opening threshold of the composite member were determined. By comparing the load-deflection curve and the images of the impact side and non-impact side damage specimens, the failure process of specimens damaged under different impact energy was evaluated. At the same time, the cross section of the damaged specimen was also inspected and analyzed, and the degree of damage such as fiber failure and the extent of delamination of the critical layer were evaluated. The results show that the opening threshold of the fiberglass-coated composite is about 30% higher than that of the carbon fiber composite.